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The following reaction is first order, C2H6 → 2 CH3. If the rate constant is equal...

The following reaction is first order, C2H6 → 2 CH3. If the rate constant is equal to 5.5 × 10-4 s-1 at 1000 K, how long will it take for 0.35 mol of C2H6 in a 1.00 L container to decrease to 0.15 mol in the same container?
26 min

6.1 min

71 min

120 min

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